Baker&#39;s oven.



G. H. MOGAUSLAND.

BAKER/S OVEN.

APPLIGATION'PILED APR. 28, 1913.

Patented June 23, 1914.

INVENTOR 2 SHEETS$HEET 1.

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GEORGE HENDERSON MGCAUSLAND, 0E EHILADELZEHIA, PENNSYLVANIA.

BAKERS OVEN.

To all whom it may concern:

Be it known that 1, GEORGE HENDERSON MoOAUsLANn, a citizen of the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have made certain new and useful Improvements in Bakers Ovens, of which the following is a specification.

My invention relates to improvements in bakers ovens, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide means for carrying away any steam which has escaped from the oven between the edge of the oven door and the wall or door frame.

A further object of my invention is to provide a novel form of oven door having channels along its edges with means for circulating air through the channels to carry away the steam into a flue leading to the chimney.

Other objects and advantages will appear in the following specification and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming part of this application in which Figure 1 is a face view of an oven constructed according to my invention, Fig. 2

is a section through a portion of the oven and door, Fig. 3 is a section through the door on a plane at right angles to Fig. 2, Fig. 4 is a fragmentary section showing a bearing for the door trunnions, and Fig. 5 is a section through the bearings at right angles to Fig. 4.

In the baking of bread in large bakeries steam is injected into the oven. The temperature required in the oven ranges from 430 to 500 F. at which temperature the steam becomes superheated. When the oven is filled with bread and the door closed, some of this steam escapes through the interstices between the door and the frame into the bake house where it sometimes condenses upon the walls and ceilings and, in combination with the flour in the air, forms an unsightly paste. It sometimes drips on bread not yet baked thereby resulting in a loss to the baker.

In carrying out my invention I provide a door frame 1 which is secured in the door opening of the oven 2. The door 3 is provided with trunnions 4, at its ends, which Specification of Letters Patent.

Application filed. April 28, 1913.

Patented June 23, 1914. Serial No. 764,018.

are arranged to be supported in bearings 5 like those shown in Figs. 4 and 5. The latter are preferably of the shape shown in Fig. 1 and are provided with grooves 5 arranged to receive tongues 1 in the walls of the door frame 1 so as to be flush with the walls, as shown in Fig. 5. Each trunnion bears a counterweight 6 on a rod 7. Set screws 8, 9, and 10 are provided for adjusting the weight 6 so as to properly balance the door.

The door itself comprises a body portion 8, having an integral tube 3 at its top. Along the sides and bottom of the door is a head or thickened portion 3 which is provided with a groove or channel 3 that communicates with the tube 3 as shown in Fig. 3. At the central portion of the door and at the bottom thereof is a partition 3 which divides the groove 3 into two parts. In Fig. 1 I have shown two openings 11. One of these openings communicates with the portion of the groove 8 on one side of the partition 8 and the other opening communicates with the groove on the opposite side of the partition 3 The tube 3 is provided with a series of openings or perforations 12, leading to the space in front of the door.

At 13 I have shown a discharge flue, preferably made of copper or other suitable material, which leads to the stack (not shown). A collar 14 is cast integrally with the door frame 1 and is provided with an enlarged bore 1 1 arranged to receive the flange 15 of the collar 15, which is ground to fit the tube 3 The latter is provided with an opening 3* which is in registration with the collar 15 when the door is in its closed position as shown in Fig. 2.

From the foregoing description of the various parts of the device the operation thereof may be readily understood.

Fig. 2 shows the door in its closed position in which position it abuts a shoulder 1 on the bottom member of the door frame 1. Any steam which might tend to escape past the bottom or ends of the door will necessarily have to pass the channels 3 Air, however, entering through the openings 11 tends to carry the steam through both branches of the groove 3 into the tube 3f and thence out through the opening 3 and into the pipe 13 and thence to the stack.

The purpose of the small openings 12 is to draw off any steam which has escaped around the upper part of the door. Since a draft is continually passing around the bottom and ends of the door, there is very little chance for the steam to escape into the bake room. The channels 3 are curved at the corners of the door so as to offer least resistance to the current.

The main purpose ofi'the partition 3 is ti, insure a continual draft along the bottom and up around the ends of the door, since without the partition the draft might be.

around one end, and this might tend to entrain the air in the passage extending tothe opposite end, thus interfering with the-draft around the opposite end orv even causing it tofiow in a direction contrary to that which. it is desiredto have it flow. Thus if one end of the door should be more highly heated thanthe other, the draft in one direction will be stronger than in the other. ith the. partition 3 however, the draft around: one end of the'door cannot. in any way interfere with the draft around the other end and there is always a positive flow of air from the partition along the bottom of'the door and. upwardly around. the ends. When the door is openedthe counter weight6 will-hold it in the dotted line POSltlOIlzShOWIl in Fig. 2. Inthis position communication with the exit pipe 13 will be cut off,,but when the door isshut. again it willbe reestablished.

I- claim:

1. The combination with a bakers oven having, a door frame, of. adoor carried by, the frame, said,door having channels-along certain of itsedges, a tube-carried by the door along one edge thereof and communicating with said channels, a. discharge pipe, and means for establishing communication between said-tube and. said discharge pipe.

2. The combination with: a, bakers oven havinga doorframe, of a door pivotally carried. by the frame, saiddoor having a tube at one edge and channels in the ends and the bottom of the door, a partition carriedby the door for separating portions ofv said channel, said door being provided withopenings for. establishing communication between the exterior of the oven and the channels on each side of. said partition.

3. The combination withv a bakers oven having a door frame, of a. door, trunnions therefor journaledinthe door frame, a.hollow tube carried. by said( door along the upper edge thereof, said ,door being provided. with. channels communicating with said tube at its ends and extending along the edges of the door andv along the bottom ofthe door, a partition carried by thedoor at its bottomfor separatingportions of the channel, said door-being provided with openings for establishing communication between the exterior of. the oven and the channels on each side of said partition, a flue, and means for establishing communication between said low tube carried by said door along the upper edge thereof, said door being provided with channels communicating withvsaid tube at its ends and extending along theedges of the door and along the bottom ofthedoor, a

partition carried by the door at its bottom for separating portions of the channel, said door being provided with openings for. establishing communication between the exterior of. the oven and thechannels on each side of said partition, a flue, andmeans for establishing communication between said tube and said flue when the door is closed and for cutting off communication when the door is opened V 5. The combination with a bakers oven having a door frame, ofadoor for said oven, trunnions carried, by said door near the upper edge thereof, a. tube carried by said door along the upperedge of. the latter, the axis of the trunnions and. the tube being coincident, a stack, an extension carried: by said. stackand. arranged to engage the tube,

said tube 'being'provided with'an opening arranged to reg ster with, said extensionwhen the dooris closed, saidtube being pr ovided. with openings for, establishing communication. between the tube and. the space in front of the door.

6. The combination. with a bakersoven having a door frame, of, a door for saidoven, trunnions carried. by said door near, the upper edge thereof, a tube carried, by said door along the upper edge of. the latter, the axis of the trunnionsandlthe tube being coincident, a stack, an extension carried by said stack and. arranged to engage the tube, said tube being provided with an openingiarranged. to register with said extension when the door isclosed, andsaid: door being provided with channels along its ends and bottom and. having openings on, its outer side forestablishing communication between the exierior ofthe oven and. said@ bottom chan ne s. 1

GEORGE HENDERSON MOGAUSLAND.

Witnesses i ARTHUR Covn, Lnwis JEssUM;

copies ofithisrpatent maybe obtained for. five cents each, by addressing the Commissioner of Patents- Washington, D. Q. 

